Chenbro RM23508M2-R620 620W 2U Rackmount Server Chassis with 8-Port 6Gb/s Mini-SAS Backplane Case Type: 2U Rackmount Chassis Material: 1.2mm SGCC M/B Type: EEB (12 x 13 inch) Processor: Intel / AMD DP Quad Drive Bays: 8x 3.5" Hot-Swap Drive Bays Backplane: 6Gb/s Mini-SAS Expansion Slots: 7 Front I/O Panel: 2x USB 2.0 Ports